Determination of Ferric Ions Based on Fluorescence Quenching of Carbon Dots

作者：Liu Xue-Ping; Yang Juan; Bai Yan^*

来源：Chinese Journal of Analytical Chemistry, 2016, 44(5): 804-808.

DOI：10.11895/j.issn.0253-3820.150885

• Carbon dots
• Glycerol
• Hydrothermal method
• Iron ions(III)

The water soluble carbon dots with high stability and excellent photoluminescent properties were synthesized by one-step hydrothermal treatment of glycerol. Based on the significant quenching effect of ferric ion on the fluorescence of carbon dots, a method with high sensitivity and good selectivity for the determination of ferric ion was established. The ratio of fluorescence intensities (F-0/F-1) had a linear relationship with the concentration of ferric ion in the range of 0. 005-1.2 mmol/L (R-2 = 0. 995) and the 3-s detection limit was 2.2 mu mol/L. Furthermore, the standard deviation and the recovery of the method for determination of iron in Iron tablets were 0. 41 mg/tablet and 95.5% 101.0%, respectively. The detection result of this method for Fe3+ ions was in agreement with that 1,10-phenanthroline spectrophotometry.

• 出版日期2016-5
• 单位暨南大学